What seems to be the problem with this setup? My 6570 is crossfired with a8-3870k but when I changed it to 6670, there's no option to enable the crossfire mode. I've done everything I could, find everything that can help me in the web but still, it's not working. Is it because it's ddr5 and only those 6670 ddr3 is the highest to crossfire with A8 or I'm missing something with configurations? Please help me with this guys. Thanks in advance.